def forward(self, input):
x, low_level_features = self.xception_features(input)
x1 = self.aspp1(x)
x2 = self.aspp2(x)
x3 = self.aspp3(x)
x4 = self.aspp4(x)
x5 = self.global_avg_pool(x)
x5 = F.interpolate(x5, size=x4.size()[2:], mode='bilinear', align_corners=True)
x = torch.cat((x1, x2, x3, x4, x5), dim=1)
x = self.conv1(x)
x = self.bn1(x)
x = self.relu(x)
x = F.interpolate(x, size=(int(math.ceil(input.size()[-2]/4)),
int(math.ceil(input.size()[-1]/4))), mode='bilinear', align_corners=True)
low_level_features = self.conv2(low_level_features)
low_level_features = self.bn2(low_level_features)
low_level_features = self.relu(low_level_features)
x = torch.cat((x, low_level_features), dim=1)
x = self.last_conv(x)
x = F.interpolate(x, size=input.size()[2:], mode='bilinear', align_corners=True)
return x
def forward(self, x):
x, skip = x
x = F.interpolate(x, scale_factor=2, mode='nearest')
if skip is not None:
x = torch.cat([x, skip], dim=1)
x = self.block(x)
return x
def forward(self, x):
"""
Arguments:
x (list[Tensor]): feature maps for each feature level.
Returns:
results (tuple[Tensor]): feature maps after FPN layers.
They are ordered from highest resolution first.
"""
last_inner = getattr(self, self.inner_blocks[-1])(x[-1])
results = []
results.append(getattr(self, self.layer_blocks[-1])(last_inner))
for feature, inner_block, layer_block in zip(
x[:-1][::-1], self.inner_blocks[:-1][::-1], self.layer_blocks[:-1][::-1]
):
inner_top_down = F.interpolate(last_inner, scale_factor=2, mode="nearest")
inner_lateral = getattr(self, inner_block)(feature)
# TODO use size instead of scale to make it robust to different sizes
# inner_top_down = F.upsample(last_inner, size=inner_lateral.shape[-2:],
# mode='bilinear', align_corners=False)
last_inner = inner_lateral + inner_top_down
results.insert(0, getattr(self, layer_block)(last_inner))
if self.top_blocks is not None:
last_results = self.top_blocks(results[-1])
results.extend(last_results)
return tuple(results)
def make_score_map(self, img, mode='sigmoid'):
"""
"""
img = img/255
# The offset is inserted so that the final size of the score map matches
# the search image. To know more see "How to overlay the search img with
# the score map" in Trello/Report. It is half of the dimension of the
# Smallest Class Equivalent of the Ref image.
offset = (((self.ref.shape[0] + 1)//4)*4 - 1)//2
img_mean = img.mean()
img_padded = np.pad(img, ((offset, offset), (offset, offset), (0, 0)),
mode='constant', constant_values=img_mean)
img_padded = numpy_to_torch_var(img_padded, device)
srch_emb = self.net.get_embedding(img_padded)
score_map = self.net.match_corr(self.ref_emb, srch_emb)
dimx = score_map.shape[-1]
dimy = score_map.shape[-2]
score_map = score_map.view(-1, dimy, dimx)
if mode == 'sigmoid':
score_map = sigmoid(score_map)
elif mode == 'norm':
score_map = score_map - score_map.min()
score_map = score_map/score_map.max()
score_map = score_map.unsqueeze(0)
# We upscale 4 times, because the total stride of the network is 4
score_map = F.interpolate(score_map, scale_factor=4, mode='bilinear',
align_corners=False)
score_map = score_map.cpu()
score_map = torch_var_to_numpy(score_map)
return score_map
def forward(self, input):
x, low_level_feat = self.backbone(input)
x = self.aspp(x)
x = self.decoder(x, low_level_feat)
x = F.interpolate(x, size=input.size()[2:], mode='bilinear', align_corners=True)
return x
def forward(self, x):
x, skip = x
x = F.interpolate(x, scale_factor=2, mode='nearest')
skip = self.skip_conv(skip)
x = x + skip
return x
def forward(self, x, low_level_feat):
low_level_feat = self.conv1(low_level_feat)
low_level_feat = self.bn1(low_level_feat)
low_level_feat = self.relu(low_level_feat)
x = F.interpolate(x, size=low_level_feat.size()[2:], mode='bilinear', align_corners=True)
x = torch.cat((x, low_level_feat), dim=1)
x = self.last_conv(x)
return x
def forward(self, x):
x1 = self.aspp1(x)
x2 = self.aspp2(x)
x3 = self.aspp3(x)
x4 = self.aspp4(x)
x5 = self.global_avg_pool(x)
x5 = F.interpolate(x5, size=x4.size()[2:], mode='bilinear', align_corners=True)
x = torch.cat((x1, x2, x3, x4, x5), dim=1)
x = self.conv1(x)
x = self.bn1(x)
x = self.relu(x)
return x
def generate(self, target_layer):
fmaps = self._find(self.fmap_pool, target_layer)
grads = self._find(self.grad_pool, target_layer)
weights = self._compute_grad_weights(grads)
gcam = torch.mul(fmaps, weights).sum(dim=1, keepdim=True)
gcam = F.relu(gcam)
gcam = F.interpolate(
gcam, self.image_shape, mode="bilinear", align_corners=False
)
B, C, H, W = gcam.shape
gcam = gcam.view(B, -1)
gcam -= gcam.min(dim=1, keepdim=True)[0]
gcam /= gcam.max(dim=1, keepdim=True)[0]
gcam = gcam.view(B, C, H, W)
return gcam
def forward(self, x):
c5, c4, c3, c2, _ = x
p5 = self.conv1(c5)
p4 = self.p4([p5, c4])
p3 = self.p3([p4, c3])
p2 = self.p2([p3, c2])
s5 = self.s5(p5)
s4 = self.s4(p4)
s3 = self.s3(p3)
s2 = self.s2(p2)
x = s5 + s4 + s3 + s2
x = self.dropout(x)
x = self.final_conv(x)
x = F.interpolate(x, scale_factor=4, mode='bilinear', align_corners=True)
return x
def forward(self, x):
features = self._get(x)
x = self.psp(features)
x = self.conv(x)
if self.dropout_factor:
x = self.dropout(x)
x = self.final_conv(x)
x = F.interpolate(
x,
scale_factor=self.downsample_factor,
mode='bilinear',
align_corners=True
)
if self.training and self.aux_output:
aux = self.aux(features)
x = [x, aux]
return x
from torchvision import transforms
# import torch.functional as F
import torch.nn.functional as F
eps = np.finfo(np.float64).eps
plt.rcParams['figure.figsize'] = 10, 10
'''
Affine crop testing
'''
img_t = F.interpolate(transforms.ToTensor()(scipy.misc.face()).unsqueeze(0), size=(768, 768), mode='bilinear')
theta = torch.from_numpy(np.array([[[0.2, 0.0, 0.2], [0.0, 0.2, 0.3]]]))
grid = F.affine_grid(theta, torch.Size((1, 3, 768, 768)))
grid.size()
plt.rcParams['figure.figsize'] = 8, 8
fig, axis = plt.subplots(nrows=1, ncols=2)
axis[0].imshow(grid[0, :, :, 0])
axis[0].set_title('x')
axis[1].imshow(grid[0, :, :, 1])
axis[1].set_title('y')
def forward(self, x):
return F.interpolate(x, size=self.size, scale_factor=self.scale_factor,
mode=self.mode, align_corners=self.align_corners)
def random_resize(images, min_size=288, max_size=448):
new_size = random.sample(list(range(min_size, max_size + 1, 32)), 1)[0]
images = F.interpolate(images, size=new_size, mode="nearest")
return images
def add_overlay(self, tag, embed, img, alpha=0.8, cmap='inferno', add_ref=None):
""" Adds to the summary the images of the input image (ref or search)
overlayed with the corresponding embedding or correlation map. It expect
tensors of with dimensions [C x H x W] or [B x C x H x W] if the tensor
has a batch dimension it takes the FIRST ELEMENT of the batch. The image
is displayed as fusion of the input image in grayscale and the overlay
in the chosen color_map, this fusion is controlled by the alpha factor.
In the case of the embeddings, since there are multiple feature
channels, we show each of them individually in a grid.
OBS: The colors represent relative values, where the peak color corresponds
to the maximum value in any given channel, so no direct value comparisons
can be made between epochs, only the relative distribution of neighboring
pixel values, (which should be enough, since we are mosly interested
in finding the maximum of a given correlation map)
Args:
tag: (str) The string identifying the image in tensorboard, images
with the same tag are grouped together with a slider, and are
indexed by epoch.
embed: (torch.Tensor) The tensor containing the embedding of an
input (ref or search image) or a correlation map (the final
output). The shape should be [B, C, H, W] or [B, H, W] for the
case of the correlation map.
img: (torch.Tensor) The image on top of which the embed is going
to be overlaid. Reference image embeddings should be overlaid
on top of reference images and search image embeddings as well
as the correlation maps should be overlaid on top of the search
images.
alpha: (float) A mixing variable, it controls how much of the final
embedding corresponds to the grayscale input image and how much
corresponds to the overlay. Alpha = 0, means there is no
overlay in the final image, only the input image. Conversely,
Alpha = 1 means there is only overlay. Adjust this value so
you can distinctly see the overlay details while still seeing
where it is in relation to the orignal image.
cmap: (str) The name of the colormap to be used with the overlay.
The colormaps are defined in the colormaps.py module, but values
include 'viridis' (greenish blue) and 'inferno' (yellowish red).
add_ref: (torch.Tensor) Optional. An additional reference image that
will be plotted to the side of the other images. Useful when
plotting correlation maps, because it lets the user see both
the search image and the reference that is used as the target.
``Example``
>>> summ_maker = SummaryMaker(os.path.join(exp_dir, 'tensorboard'), params,
model.upscale_factor)
...
>>> embed_ref = model.get_embedding(ref_img_batch)
>>> embed_srch = model.get_embedding(search_batch)
>>> output_batch = model.match_corr(embed_ref, embed_srch)
>>> batch_index = 0
>>> summ_maker.add_overlay("Ref_image_{}".format(tbx_index), embed_ref[batch_index], ref_img_batch[batch_index], cmap='inferno')
>>> summ_maker.add_overlay("Search_image_{}".format(tbx_index), embed_srch[batch_index], search_batch[batch_index], cmap='inferno')
>>> summ_maker.add_overlay("Correlation_map_{}".format(tbx_index), output_batch[batch_index], search_batch[batch_index], cmap='inferno')
"""
# TODO Add numbers in the final image to the feature channels.
# TODO Add the color bar showing the progression of values.
# If minibatch is given, take only the first image
# TODO let the user select the image? Loop on all images?
if len(embed.shape) == 4:
embed = embed[0]
if len(img.shape) == 4:
img = img[0]
# Normalize the image.
img = img - img.min()
img = img/img.max()
embed = cm.apply_cmap(embed, cmap=cmap)
# Get grayscale version of image by taking the weighted average of the channels
# as described in https://www.cs.virginia.edu/~vicente/recognition/notebooks/image_processing_lab.html#2.-Converting-to-Grayscale
R,G,B = img
img_gray = 0.21 * R + 0.72 * G + 0.07 * B
# Get the upscaled size of the embedding, so as to take into account
# the network's downscale caused by the stride.
upsc_size = (embed.shape[-1] - 1) * self.up_factor + 1
embed = F.interpolate(embed, upsc_size, mode='bilinear',
align_corners=False)
# Pad the embedding with zeros to match the image dimensions. We pad
# all 4 corners equally to keep the embedding centered.
tot_pad = img.shape[-1] - upsc_size
# Sanity check 1. The amount of padding must be equal on all sides, so
# the total padding on any dimension must be an even integer.
assert tot_pad % 2 == 0, "The embed or image dimensions are incorrect."
pad = int(tot_pad/2)
embed = F.pad(embed, (pad, pad, pad, pad), 'constant', 0)
# Sanity check 2, the size of the embedding in the (H, w) dimensions
# matches the size of the image.
assert embed.shape[-2:] == img.shape[-2:], ("The embedding overlay "
"and image dimensions "
"do not agree.")
final_imgs = alpha * embed + (1-alpha) * img_gray
# The embedding_channel (or feature channel) dimension is treated like
# a batch dimension, so the grid shows each individual embeding
# overlayed with the input image. Plus the original image is also shown.
# If add_ref is used the ref image is the first to be shown.
img = img.unsqueeze(0)
final_imgs = torch.cat((img, final_imgs))
if add_ref is not None:
# Pads the image if necessary
pad = int((img.shape[-1] - add_ref.shape[-1])//2)
add_ref = F.pad(add_ref, (pad, pad, pad, pad), 'constant', 0)
add_ref = add_ref.unsqueeze(0)
final_imgs = torch.cat((add_ref, final_imgs))
final_imgs = make_grid(final_imgs, nrow=6)
self.writer_val.add_image(tag, final_imgs, self.epoch)
def forward(self, x):
x = F.interpolate(x, scale_factor=self.scale_factor, mode=self.mode)
x = self.conv(x)
return x
def forward(self, x_small, x_big):
x_small = self.up(x_small)
x_small = F.interpolate(x_small, size=x_big.size()[2:], mode='bilinear', align_corners=True)
x = torch.cat([x_big, x_small], dim=1)
x = self.conv(x)
return x
def loss(self,
cls_scores,
bbox_preds,
centernesses,
cof_preds,
feat_masks,
track_feats,
track_feats_ref,
gt_bboxes,
gt_labels,
img_metas,
cfg,
gt_bboxes_ignore=None,
gt_masks_list=None,
ref_bboxes_list=None,
gt_pids_list=None):
assert len(cls_scores) == len(bbox_preds) == len(centernesses)
featmap_sizes = [featmap.size()[-2:] for featmap in cls_scores]
all_level_points = self.get_points(featmap_sizes, bbox_preds[0].dtype,
bbox_preds[0].device)
labels, bbox_targets, label_list, bbox_targets_list, gt_inds = self.fcos_target(
all_level_points, gt_bboxes, gt_labels)
# decode detection and groundtruth
det_bboxes = []
det_targets = []
num_levels = len(bbox_preds)
for img_id in range(len(img_metas)):
bbox_pred_list = [
bbox_preds[i][img_id].permute(1, 2, 0).reshape(-1, 4).detach()
for i in range(num_levels)
]
bbox_target_list = bbox_targets_list[img_id]
bboxes = []
targets = []
for i in range(len(bbox_pred_list)):
bbox_pred = bbox_pred_list[i]
bbox_target = bbox_target_list[i]
points = all_level_points[i]
bboxes.append(distance2bbox(points, bbox_pred))
targets.append(distance2bbox(points, bbox_target))
bboxes = torch.cat(bboxes, dim=0)
targets = torch.cat(targets, dim=0)
det_bboxes.append(bboxes)
det_targets.append(targets)
gt_masks = []
for i in range(len(gt_labels)):
gt_label = gt_labels[i]
gt_masks.append(
torch.from_numpy(
np.array(gt_masks_list[i][:gt_label.shape[0]],
dtype=np.float32)).to(gt_label.device))
num_imgs = cls_scores[0].size(0)
# flatten cls_scores, bbox_preds and centerness
flatten_cls_scores = [
cls_score.permute(0, 2, 3, 1).reshape(-1, self.cls_out_channels)
for cls_score in cls_scores
]
flatten_bbox_preds = [
bbox_pred.permute(0, 2, 3, 1).reshape(-1, 4)
for bbox_pred in bbox_preds
]
flatten_centerness = [
centerness.permute(0, 2, 3, 1).reshape(-1)
for centerness in centernesses
]
flatten_cls_scores = torch.cat(flatten_cls_scores)
flatten_bbox_preds = torch.cat(flatten_bbox_preds)
flatten_centerness = torch.cat(flatten_centerness)
flatten_labels = torch.cat(labels)
flatten_bbox_targets = torch.cat(bbox_targets)
# repeat points to align with bbox_preds
flatten_points = torch.cat(
[points.repeat(num_imgs, 1) for points in all_level_points])
pos_inds = flatten_labels.nonzero().reshape(-1)
num_pos = len(pos_inds)
loss_cls = self.loss_cls(flatten_cls_scores,
flatten_labels,
avg_factor=num_pos +
num_imgs) # avoid num_pos is 0
pos_bbox_preds = flatten_bbox_preds[pos_inds]
pos_centerness = flatten_centerness[pos_inds]
if num_pos > 0:
pos_bbox_targets = flatten_bbox_targets[pos_inds]
pos_centerness_targets = self.centerness_target(pos_bbox_targets)
pos_points = flatten_points[pos_inds]
pos_decoded_bbox_preds = distance2bbox(pos_points, pos_bbox_preds)
pos_decoded_target_preds = distance2bbox(pos_points,
pos_bbox_targets)
# centerness weighted iou loss
loss_bbox = self.loss_bbox(pos_decoded_bbox_preds,
pos_decoded_target_preds,
weight=pos_centerness_targets,
avg_factor=pos_centerness_targets.sum())
loss_centerness = self.loss_centerness(pos_centerness,
pos_centerness_targets)
else:
loss_bbox = pos_bbox_preds.sum()
loss_centerness = pos_centerness.sum()
##########mask loss#################
flatten_cls_scores1 = [
cls_score.permute(0, 2, 3, 1).reshape(num_imgs, -1,
self.cls_out_channels)
for cls_score in cls_scores
]
flatten_cls_scores1 = torch.cat(flatten_cls_scores1, dim=1)
flatten_cof_preds = [
cof_pred.permute(0, 2, 3, 1).reshape(cof_pred.shape[0], -1, 32 * 4)
for cof_pred in cof_preds
]
loss_mask = 0
loss_match = 0
match_acc = 0
n_total = 0
flatten_cof_preds = torch.cat(flatten_cof_preds, dim=1)
for i in range(num_imgs):
labels = torch.cat(
[labels_level.flatten() for labels_level in label_list[i]])
bbox_dt = det_bboxes[i] / 2
bbox_dt = bbox_dt.detach()
pos_inds = (labels > 0).nonzero().view(-1)
cof_pred = flatten_cof_preds[i][pos_inds]
img_mask = feat_masks[i]
mask_h = img_mask.shape[1]
mask_w = img_mask.shape[2]
idx_gt = gt_inds[i]
bbox_dt = bbox_dt[pos_inds, :4]
area = (bbox_dt[:, 2] - bbox_dt[:, 0]) * (bbox_dt[:, 3] -
bbox_dt[:, 1])
bbox_dt = bbox_dt[area > 1.0, :]
idx_gt = idx_gt[area > 1.0]
cof_pred = cof_pred[area > 1.0]
if bbox_dt.shape[0] == 0:
loss_mask += area.sum() * 0
continue
bbox_gt = gt_bboxes[i]
cls_score = flatten_cls_scores1[i, pos_inds, labels[pos_inds] -
1].sigmoid().detach()
cls_score = cls_score[area > 1.0]
ious = bbox_overlaps(bbox_gt[idx_gt] / 2, bbox_dt, is_aligned=True)
weighting = cls_score * ious
weighting = weighting / (torch.sum(weighting) +
0.0001) * len(weighting)
###################track####################
bboxes = ref_bboxes_list[i]
amplitude = 0.05
random_offsets = bboxes.new_empty(bboxes.shape[0], 4).uniform_(
-amplitude, amplitude)
# before jittering
cxcy = (bboxes[:, 2:4] + bboxes[:, :2]) / 2
wh = (bboxes[:, 2:4] - bboxes[:, :2]).abs()
# after jittering
new_cxcy = cxcy + wh * random_offsets[:, :2]
new_wh = wh * (1 + random_offsets[:, 2:])
# xywh to xyxy
new_x1y1 = (new_cxcy - new_wh / 2)
new_x2y2 = (new_cxcy + new_wh / 2)
new_bboxes = torch.cat([new_x1y1, new_x2y2], dim=1)
# clip bboxes
# print(bbox_dt.shape)
track_feat_i = self.extract_box_feature_center_single(
track_feats[i], bbox_dt * 2)
track_box_ref = self.extract_box_feature_center_single(
track_feats_ref[i], new_bboxes)
gt_pids = gt_pids_list[i]
cur_ids = gt_pids[idx_gt]
prod = torch.mm(track_feat_i, torch.transpose(track_box_ref, 0, 1))
m = prod.size(0)
dummy = torch.zeros(m, 1, device=torch.cuda.current_device())
prod_ext = torch.cat([dummy, prod], dim=1)
loss_match += cross_entropy(prod_ext, cur_ids)
n_total += len(idx_gt)
match_acc += accuracy(prod_ext, cur_ids) * len(idx_gt)
gt_mask = F.interpolate(gt_masks[i].unsqueeze(0),
scale_factor=0.5,
mode='bilinear',
align_corners=False).squeeze(0)
shape = np.minimum(feat_masks[i].shape, gt_mask.shape)
gt_mask_new = gt_mask.new_zeros(gt_mask.shape[0], mask_h, mask_w)
gt_mask_new[:gt_mask.shape[0], :shape[1], :
shape[2]] = gt_mask[:gt_mask.
shape[0], :shape[1], :shape[2]]
gt_mask_new = gt_mask_new.gt(0.5).float()
gt_mask_new = torch.index_select(gt_mask_new, 0,
idx_gt).permute(1, 2,
0).contiguous()
#######spp###########################
img_mask1 = img_mask.permute(1, 2, 0)
pos_masks00 = torch.sigmoid(img_mask1 @ cof_pred[:, 0:32].t())
pos_masks01 = torch.sigmoid(img_mask1 @ cof_pred[:, 32:64].t())
pos_masks10 = torch.sigmoid(img_mask1 @ cof_pred[:, 64:96].t())
pos_masks11 = torch.sigmoid(img_mask1 @ cof_pred[:, 96:128].t())
pred_masks = torch.stack(
[pos_masks00, pos_masks01, pos_masks10, pos_masks11], dim=0)
pred_masks = self.crop_cuda(pred_masks, bbox_dt)
gt_mask_crop = self.crop_gt_cuda(gt_mask_new, bbox_dt)
# pred_masks, gt_mask_crop = crop_split(pos_masks00, pos_masks01, pos_masks10, pos_masks11, bbox_dt,
# gt_mask_new)
pre_loss = F.binary_cross_entropy(pred_masks,
gt_mask_crop,
reduction='none')
pos_get_csize = center_size(bbox_dt)
gt_box_width = pos_get_csize[:, 2]
gt_box_height = pos_get_csize[:, 3]
pre_loss = pre_loss.sum(dim=(
0, 1)) / gt_box_width / gt_box_height / pos_get_csize.shape[0]
loss_mask += torch.sum(pre_loss * weighting.detach())
loss_mask = loss_mask / num_imgs
loss_match = loss_match / num_imgs
match_acc = match_acc / n_total
if loss_mask == 0:
loss_mask = bbox_dt[:, 0].sum() * 0
return dict(loss_cls=loss_cls,
loss_bbox=loss_bbox,
loss_centerness=loss_centerness,
loss_mask=loss_mask,
loss_match=loss_match,
match_acc=match_acc)
def forward(self, feats, feats_x, flag_train=True):
# return multi_apply(self.forward_single, feats, self.scales)
cls_scores = []
bbox_preds = []
centernesses = []
cof_preds = []
feat_masks = []
track_feats = []
track_feats_ref = []
count = 0
for x, x_f, scale, stride in zip(feats, feats_x, self.scales,
self.strides):
cls_feat = x
reg_feat = x
track_feat = x
track_feat_f = x_f
for cls_layer in self.cls_convs:
cls_feat = cls_layer(cls_feat)
for reg_layer in self.reg_convs:
reg_feat = reg_layer(reg_feat)
if count < 3:
for track_layer in self.track_convs:
track_feat = track_layer(track_feat)
track_feat = F.interpolate(track_feat,
scale_factor=(2**count),
mode='bilinear',
align_corners=False)
track_feats.append(track_feat)
if flag_train:
for track_layer in self.track_convs:
track_feat_f = track_layer(track_feat_f)
track_feat_f = F.interpolate(track_feat_f,
scale_factor=(2**count),
mode='bilinear',
align_corners=False)
track_feats_ref.append(track_feat_f)
# scale the bbox_pred of different level
# float to avoid overflow when enabling FP16
bbox_pred = scale(self.fcos_reg(reg_feat))
cls_feat = self.feat_align(cls_feat, bbox_pred)
cls_score = self.fcos_cls(cls_feat)
centerness = self.fcos_centerness(reg_feat)
centernesses.append(centerness)
cls_scores.append(cls_score)
bbox_preds.append(bbox_pred.float() * stride)
########COFFECIENTS###############
cof_pred = self.sip_cof(cls_feat)
cof_preds.append(cof_pred)
############contextual#######################
if count < 3:
feat_up = F.interpolate(reg_feat,
scale_factor=(2**count),
mode='bilinear',
align_corners=False)
feat_masks.append(feat_up)
count = count + 1
# ################contextual enhanced##################
feat_masks = torch.cat(feat_masks, dim=1)
feat_masks = self.relu(
self.sip_mask_lat(self.relu(self.sip_mask_lat0(feat_masks))))
feat_masks = F.interpolate(feat_masks,
scale_factor=4,
mode='bilinear',
align_corners=False)
track_feats = torch.cat(track_feats, dim=1)
track_feats = self.sipmask_track(track_feats)
if flag_train:
track_feats_ref = torch.cat(track_feats_ref, dim=1)
track_feats_ref = self.sipmask_track(track_feats_ref)
return cls_scores, bbox_preds, centernesses, cof_preds, feat_masks, track_feats, track_feats_ref
else:
return cls_scores, bbox_preds, centernesses, cof_preds, feat_masks, track_feats, track_feats
def validation(model, val_loader, epoch, writer):
# set evaluate mode
model.eval()
total_correct, total_label = 0, 0
total_correct_hb, total_label_hb = 0, 0
total_correct_fb, total_label_fb = 0, 0
hist = np.zeros((args.num_classes, args.num_classes))
hist_hb = np.zeros((args.hbody_cls, args.hbody_cls))
hist_fb = np.zeros((args.fbody_cls, args.fbody_cls))
# Iterate over data.
bar = Bar('Processing {}'.format('val'), max=len(val_loader))
bar.check_tty = False
for idx, batch in enumerate(val_loader):
image, target, hlabel, flabel, _ = batch
image, target, hlabel, flabel = image.cuda(), target.cuda(
), hlabel.cuda(), flabel.cuda()
with torch.no_grad():
h, w = target.size(1), target.size(2)
outputs = model(image)
outputs = gather(outputs, 0, dim=0)
preds = F.interpolate(input=outputs[0][-1],
size=(h, w),
mode='bilinear',
align_corners=True)
preds_hb = F.interpolate(input=outputs[1][-1],
size=(h, w),
mode='bilinear',
align_corners=True)
preds_fb = F.interpolate(input=outputs[2][-1],
size=(h, w),
mode='bilinear',
align_corners=True)
if idx % 50 == 0:
img_vis = inv_preprocess(image, num_images=args.save_num)
label_vis = decode_predictions(target.int(),
num_images=args.save_num,
num_classes=args.num_classes)
pred_vis = decode_predictions(torch.argmax(preds, dim=1),
num_images=args.save_num,
num_classes=args.num_classes)
# visual grids
img_grid = torchvision.utils.make_grid(
torch.from_numpy(img_vis.transpose(0, 3, 1, 2)))
label_grid = torchvision.utils.make_grid(
torch.from_numpy(label_vis.transpose(0, 3, 1, 2)))
pred_grid = torchvision.utils.make_grid(
torch.from_numpy(pred_vis.transpose(0, 3, 1, 2)))
writer.add_image('val_images', img_grid,
epoch * len(val_loader) + idx + 1)
writer.add_image('val_labels', label_grid,
epoch * len(val_loader) + idx + 1)
writer.add_image('val_preds', pred_grid,
epoch * len(val_loader) + idx + 1)
# pixelAcc
correct, labeled = batch_pix_accuracy(preds.data, target)
correct_hb, labeled_hb = batch_pix_accuracy(preds_hb.data, hlabel)
correct_fb, labeled_fb = batch_pix_accuracy(preds_fb.data, flabel)
# mIoU
hist += fast_hist(preds, target, args.num_classes)
hist_hb += fast_hist(preds_hb, hlabel, args.hbody_cls)
hist_fb += fast_hist(preds_fb, flabel, args.fbody_cls)
total_correct += correct
total_correct_hb += correct_hb
total_correct_fb += correct_fb
total_label += labeled
total_label_hb += labeled_hb
total_label_fb += labeled_fb
pixAcc = 1.0 * total_correct / (np.spacing(1) + total_label)
IoU = round(np.nanmean(per_class_iu(hist)) * 100, 2)
pixAcc_hb = 1.0 * total_correct_hb / (np.spacing(1) +
total_label_hb)
IoU_hb = round(np.nanmean(per_class_iu(hist_hb)) * 100, 2)
pixAcc_fb = 1.0 * total_correct_fb / (np.spacing(1) +
total_label_fb)
IoU_fb = round(np.nanmean(per_class_iu(hist_fb)) * 100, 2)
# plot progress
bar.suffix = '{} / {} | pixAcc: {pixAcc:.4f}, mIoU: {IoU:.4f} |' \
'pixAcc_hb: {pixAcc_hb:.4f}, mIoU_hb: {IoU_hb:.4f} |' \
'pixAcc_fb: {pixAcc_fb:.4f}, mIoU_fb: {IoU_fb:.4f}'.format(idx + 1, len(val_loader),
pixAcc=pixAcc, IoU=IoU,
pixAcc_hb=pixAcc_hb, IoU_hb=IoU_hb,
pixAcc_fb=pixAcc_fb, IoU_fb=IoU_fb)
bar.next()
print('\n per class iou part: {}'.format(per_class_iu(hist) * 100))
print('per class iou hb: {}'.format(per_class_iu(hist_hb) * 100))
print('per class iou fb: {}'.format(per_class_iu(hist_fb) * 100))
mIoU = round(np.nanmean(per_class_iu(hist)) * 100, 2)
mIoU_hb = round(np.nanmean(per_class_iu(hist_hb)) * 100, 2)
mIoU_fb = round(np.nanmean(per_class_iu(hist_fb)) * 100, 2)
writer.add_scalar('val_pixAcc', pixAcc, epoch)
writer.add_scalar('val_mIoU', mIoU, epoch)
writer.add_scalar('val_pixAcc_hb', pixAcc_hb, epoch)
writer.add_scalar('val_mIoU_hb', mIoU_hb, epoch)
writer.add_scalar('val_pixAcc_fb', pixAcc_fb, epoch)
writer.add_scalar('val_mIoU_fb', mIoU_fb, epoch)
bar.finish()
return pixAcc, mIoU
def _shortcut(self, x):
if self.upsample:
x = F.interpolate(x, scale_factor=2, mode='nearest')
if self.learned_sc:
x = self.conv1x1(x)
return x
def __unpool(self, input):
_, _, H, W = input.shape
return F.interpolate(input, mode='bilinear', scale_factor=2, align_corners=True)
def train(hyp, opt, device, tb_writer=None, wandb=None):
logger.info(f'Hyperparameters {hyp}')
save_dir, epochs, batch_size, total_batch_size, weights, rank = \
Path(opt.save_dir), opt.epochs, opt.batch_size, opt.total_batch_size, opt.weights, opt.global_rank
# Directories
wdir = save_dir / 'weights'
wdir.mkdir(parents=True, exist_ok=True) # make dir
last = wdir / 'last.pt'
best = wdir / 'best.pt'
results_file = save_dir / 'results.txt'
# Save run settings
with open(save_dir / 'hyp.yaml', 'w') as f:
yaml.dump(hyp, f, sort_keys=False)
with open(save_dir / 'opt.yaml', 'w') as f:
yaml.dump(vars(opt), f, sort_keys=False)
# Configure
plots = not opt.evolve # create plots
cuda = device.type != 'cpu'
init_seeds(2 + rank)
with open(opt.data) as f:
data_dict = yaml.load(f, Loader=yaml.FullLoader) # data dict
with torch_distributed_zero_first(rank):
check_dataset(data_dict) # check
train_path = data_dict['train']
test_path = data_dict['val']
nc = 1 if opt.single_cls else int(data_dict['nc']) # number of classes
names = ['item'] if opt.single_cls and len(data_dict['names']) != 1 else data_dict['names'] # class names
assert len(names) == nc, '%g names found for nc=%g dataset in %s' % (len(names), nc, opt.data) # check
# Model
pretrained = weights.endswith('.pt')
if pretrained:
with torch_distributed_zero_first(rank):
attempt_download(weights) # download if not found locally
ckpt = torch.load(weights, map_location=device) # load checkpoint
if hyp.get('anchors'):
ckpt['model'].yaml['anchors'] = round(hyp['anchors']) # force autoanchor
model = Model(opt.cfg or ckpt['model'].yaml, ch=3, nc=nc).to(device) # create
exclude = ['anchor'] if opt.cfg or hyp.get('anchors') else [] # exclude keys
state_dict = ckpt['model'].float().state_dict() # to FP32
state_dict = intersect_dicts(state_dict, model.state_dict(), exclude=exclude) # intersect
model.load_state_dict(state_dict, strict=False) # load
logger.info('Transferred %g/%g items from %s' % (len(state_dict), len(model.state_dict()), weights)) # report
else:
model = Model(opt.cfg, ch=3, nc=nc).to(device) # create
# Freeze
freeze = [] # parameter names to freeze (full or partial)
for k, v in model.named_parameters():
v.requires_grad = True # train all layers
if any(x in k for x in freeze):
print('freezing %s' % k)
v.requires_grad = False
# Optimizer
nbs = 64 # nominal batch size
accumulate = max(round(nbs / total_batch_size), 1) # accumulate loss before optimizing
hyp['weight_decay'] *= total_batch_size * accumulate / nbs # scale weight_decay
logger.info(f"Scaled weight_decay = {hyp['weight_decay']}")
pg0, pg1, pg2 = [], [], [] # optimizer parameter groups
for k, v in model.named_modules():
if hasattr(v, 'bias') and isinstance(v.bias, nn.Parameter):
pg2.append(v.bias) # biases
if isinstance(v, nn.BatchNorm2d):
pg0.append(v.weight) # no decay
elif hasattr(v, 'weight') and isinstance(v.weight, nn.Parameter):
pg1.append(v.weight) # apply decay
if opt.adam:
optimizer = optim.Adam(pg0, lr=hyp['lr0'], betas=(hyp['momentum'], 0.999)) # adjust beta1 to momentum
else:
optimizer = optim.SGD(pg0, lr=hyp['lr0'], momentum=hyp['momentum'], nesterov=True)
optimizer.add_param_group({'params': pg1, 'weight_decay': hyp['weight_decay']}) # add pg1 with weight_decay
optimizer.add_param_group({'params': pg2}) # add pg2 (biases)
logger.info('Optimizer groups: %g .bias, %g conv.weight, %g other' % (len(pg2), len(pg1), len(pg0)))
del pg0, pg1, pg2
# Scheduler https://arxiv.org/pdf/1812.01187.pdf
# https://pytorch.org/docs/stable/_modules/torch/optim/lr_scheduler.html#OneCycleLR
lf = one_cycle(1, hyp['lrf'], epochs) # cosine 1->hyp['lrf']
scheduler = lr_scheduler.LambdaLR(optimizer, lr_lambda=lf)
# plot_lr_scheduler(optimizer, scheduler, epochs)
# Logging
if rank in [-1, 0] and wandb and wandb.run is None:
opt.hyp = hyp # add hyperparameters
wandb_run = wandb.init(config=opt, resume="allow",
project='YOLOv5' if opt.project == 'runs/train' else Path(opt.project).stem,
name=save_dir.stem,
id=ckpt.get('wandb_id') if 'ckpt' in locals() else None)
loggers = {'wandb': wandb} # loggers dict
# Resume
start_epoch, best_fitness = 0, 0.0
if pretrained:
# Optimizer
if ckpt['optimizer'] is not None:
optimizer.load_state_dict(ckpt['optimizer'])
best_fitness = ckpt['best_fitness']
# Results
if ckpt.get('training_results') is not None:
with open(results_file, 'w') as file:
file.write(ckpt['training_results']) # write results.txt
# Epochs
start_epoch = ckpt['epoch'] + 1
if opt.resume:
assert start_epoch > 0, '%s training to %g epochs is finished, nothing to resume.' % (weights, epochs)
if epochs < start_epoch:
logger.info('%s has been trained for %g epochs. Fine-tuning for %g additional epochs.' %
(weights, ckpt['epoch'], epochs))
epochs += ckpt['epoch'] # finetune additional epochs
del ckpt, state_dict
# Image sizes
gs = int(model.stride.max()) # grid size (max stride)
nl = model.model[-1].nl # number of detection layers (used for scaling hyp['obj'])
imgsz, imgsz_test = [check_img_size(x, gs) for x in opt.img_size] # verify imgsz are gs-multiples
# DP mode
if cuda and rank == -1 and torch.cuda.device_count() > 1:
model = torch.nn.DataParallel(model)
# SyncBatchNorm
if opt.sync_bn and cuda and rank != -1:
model = torch.nn.SyncBatchNorm.convert_sync_batchnorm(model).to(device)
logger.info('Using SyncBatchNorm()')
# EMA
ema = ModelEMA(model) if rank in [-1, 0] else None
# DDP mode
if cuda and rank != -1:
model = DDP(model, device_ids=[opt.local_rank], output_device=opt.local_rank)
# Trainloader
dataloader, dataset = create_dataloader(train_path, imgsz, batch_size, gs, opt,
hyp=hyp, augment=True, cache=opt.cache_images, rect=opt.rect, rank=rank,
world_size=opt.world_size, workers=opt.workers,
image_weights=opt.image_weights, quad=opt.quad)
mlc = np.concatenate(dataset.labels, 0)[:, 0].max() # max label class
nb = len(dataloader) # number of batches
assert mlc < nc, 'Label class %g exceeds nc=%g in %s. Possible class labels are 0-%g' % (mlc, nc, opt.data, nc - 1)
# Process 0
if rank in [-1, 0]:
ema.updates = start_epoch * nb // accumulate # set EMA updates
testloader = create_dataloader(test_path, imgsz_test, total_batch_size, gs, opt, # testloader
hyp=hyp, cache=opt.cache_images and not opt.notest, rect=True,
rank=-1, world_size=opt.world_size, workers=opt.workers, pad=0.5)[0]
if not opt.resume:
labels = np.concatenate(dataset.labels, 0)
c = torch.tensor(labels[:, 0]) # classes
# cf = torch.bincount(c.long(), minlength=nc) + 1. # frequency
# model._initialize_biases(cf.to(device))
if plots:
plot_labels(labels, save_dir, loggers)
if tb_writer:
tb_writer.add_histogram('classes', c, 0)
# Anchors
if not opt.noautoanchor:
check_anchors(dataset, model=model, thr=hyp['anchor_t'], imgsz=imgsz)
# Model parameters
hyp['box'] *= 3. / nl # scale to layers
hyp['cls'] *= nc / 80. * 3. / nl # scale to classes and layers
hyp['obj'] *= (imgsz / 640) ** 2 * 3. / nl # scale to image size and layers
model.nc = nc # attach number of classes to model
model.hyp = hyp # attach hyperparameters to model
model.gr = 1.0 # iou loss ratio (obj_loss = 1.0 or iou)
model.class_weights = labels_to_class_weights(dataset.labels, nc).to(device) * nc # attach class weights
model.names = names
# Start training
t0 = time.time()
nw = max(round(hyp['warmup_epochs'] * nb), 1000) # number of warmup iterations, max(3 epochs, 1k iterations)
# nw = min(nw, (epochs - start_epoch) / 2 * nb) # limit warmup to < 1/2 of training
maps = np.zeros(nc) # mAP per class
results = (0, 0, 0, 0, 0, 0, 0) # P, R, [email protected], [email protected], val_loss(box, obj, cls)
scheduler.last_epoch = start_epoch - 1 # do not move
scaler = amp.GradScaler(enabled=cuda)
logger.info('Image sizes %g train, %g test\n'
'Using %g dataloader workers\nLogging results to %s\n'
'Starting training for %g epochs...' % (imgsz, imgsz_test, dataloader.num_workers, save_dir, epochs))
for epoch in range(start_epoch, epochs): # epoch ------------------------------------------------------------------
model.train()
# Update image weights (optional)
if opt.image_weights:
# Generate indices
if rank in [-1, 0]:
cw = model.class_weights.cpu().numpy() * (1 - maps) ** 2 / nc # class weights
iw = labels_to_image_weights(dataset.labels, nc=nc, class_weights=cw) # image weights
dataset.indices = random.choices(range(dataset.n), weights=iw, k=dataset.n) # rand weighted idx
# Broadcast if DDP
if rank != -1:
indices = (torch.tensor(dataset.indices) if rank == 0 else torch.zeros(dataset.n)).int()
dist.broadcast(indices, 0)
if rank != 0:
dataset.indices = indices.cpu().numpy()
# Update mosaic border
# b = int(random.uniform(0.25 * imgsz, 0.75 * imgsz + gs) // gs * gs)
# dataset.mosaic_border = [b - imgsz, -b] # height, width borders
mloss = torch.zeros(4, device=device) # mean losses
if rank != -1:
dataloader.sampler.set_epoch(epoch)
pbar = enumerate(dataloader)
logger.info(('\n' + '%10s' * 8) % ('Epoch', 'gpu_mem', 'box', 'obj', 'cls', 'total', 'targets', 'img_size'))
if rank in [-1, 0]:
pbar = tqdm(pbar, total=nb) # progress bar
optimizer.zero_grad()
for i, (imgs, targets, paths, _) in pbar: # batch -------------------------------------------------------------
ni = i + nb * epoch # number integrated batches (since train start)
imgs = imgs.to(device, non_blocking=True).float() / 255.0 # uint8 to float32, 0-255 to 0.0-1.0
# Warmup
if ni <= nw:
xi = [0, nw] # x interp
# model.gr = np.interp(ni, xi, [0.0, 1.0]) # iou loss ratio (obj_loss = 1.0 or iou)
accumulate = max(1, np.interp(ni, xi, [1, nbs / total_batch_size]).round())
for j, x in enumerate(optimizer.param_groups):
# bias lr falls from 0.1 to lr0, all other lrs rise from 0.0 to lr0
x['lr'] = np.interp(ni, xi, [hyp['warmup_bias_lr'] if j == 2 else 0.0, x['initial_lr'] * lf(epoch)])
if 'momentum' in x:
x['momentum'] = np.interp(ni, xi, [hyp['warmup_momentum'], hyp['momentum']])
# Multi-scale
if opt.multi_scale:
sz = random.randrange(imgsz * 0.5, imgsz * 1.5 + gs) // gs * gs # size
sf = sz / max(imgs.shape[2:]) # scale factor
if sf != 1:
ns = [math.ceil(x * sf / gs) * gs for x in imgs.shape[2:]] # new shape (stretched to gs-multiple)
imgs = F.interpolate(imgs, size=ns, mode='bilinear', align_corners=False)
# Forward
with amp.autocast(enabled=cuda):
pred = model(imgs) # forward
loss, loss_items = compute_loss(pred, targets.to(device), model) # loss scaled by batch_size
if rank != -1:
loss *= opt.world_size # gradient averaged between devices in DDP mode
if opt.quad:
loss *= 4.
# Backward
scaler.scale(loss).backward()
# Optimize
if ni % accumulate == 0:
scaler.step(optimizer) # optimizer.step
scaler.update()
optimizer.zero_grad()
if ema:
ema.update(model)
# Print
if rank in [-1, 0]:
mloss = (mloss * i + loss_items) / (i + 1) # update mean losses
mem = '%.3gG' % (torch.cuda.memory_reserved() / 1E9 if torch.cuda.is_available() else 0) # (GB)
s = ('%10s' * 2 + '%10.4g' * 6) % (
'%g/%g' % (epoch, epochs - 1), mem, *mloss, targets.shape[0], imgs.shape[-1])
pbar.set_description(s)
# Plot
if plots and ni < 3:
f = save_dir / f'train_batch{ni}.jpg' # filename
Thread(target=plot_images, args=(imgs, targets, paths, f), daemon=True).start()
# if tb_writer:
# tb_writer.add_image(f, result, dataformats='HWC', global_step=epoch)
# tb_writer.add_graph(model, imgs) # add model to tensorboard
elif plots and ni == 3 and wandb:
wandb.log({"Mosaics": [wandb.Image(str(x), caption=x.name) for x in save_dir.glob('train*.jpg')]})
# end batch ------------------------------------------------------------------------------------------------
# end epoch ----------------------------------------------------------------------------------------------------
# Scheduler
lr = [x['lr'] for x in optimizer.param_groups] # for tensorboard
scheduler.step()
# DDP process 0 or single-GPU
if rank in [-1, 0]:
# mAP
if ema:
ema.update_attr(model, include=['yaml', 'nc', 'hyp', 'gr', 'names', 'stride', 'class_weights'])
final_epoch = epoch + 1 == epochs
if not opt.notest or final_epoch: # Calculate mAP
results, maps, times = test.test(opt.data,
batch_size=total_batch_size,
imgsz=imgsz_test,
model=ema.ema,
single_cls=opt.single_cls,
dataloader=testloader,
save_dir=save_dir,
plots=plots and final_epoch,
log_imgs=opt.log_imgs if wandb else 0)
# Write
with open(results_file, 'a') as f:
f.write(s + '%10.4g' * 7 % results + '\n') # P, R, [email protected], [email protected], val_loss(box, obj, cls)
if len(opt.name) and opt.bucket:
os.system('gsutil cp %s gs://%s/results/results%s.txt' % (results_file, opt.bucket, opt.name))
# Log
tags = ['train/box_loss', 'train/obj_loss', 'train/cls_loss', # train loss
'metrics/precision', 'metrics/recall', 'metrics/mAP_0.5', 'metrics/mAP_0.5:0.95',
'val/box_loss', 'val/obj_loss', 'val/cls_loss', # val loss
'x/lr0', 'x/lr1', 'x/lr2'] # params
for x, tag in zip(list(mloss[:-1]) + list(results) + lr, tags):
if tb_writer:
tb_writer.add_scalar(tag, x, epoch) # tensorboard
if wandb:
wandb.log({tag: x}) # W&B
# Update best mAP
fi = fitness(np.array(results).reshape(1, -1)) # weighted combination of [P, R, [email protected], [email protected]]
if fi > best_fitness:
best_fitness = fi
# Save model
save = (not opt.nosave) or (final_epoch and not opt.evolve)
if save:
with open(results_file, 'r') as f: # create checkpoint
ckpt = {'epoch': epoch,
'best_fitness': best_fitness,
'training_results': f.read(),
'model': ema.ema,
'optimizer': None if final_epoch else optimizer.state_dict(),
'wandb_id': wandb_run.id if wandb else None}
# Save last, best and delete
torch.save(ckpt, last)
if best_fitness == fi:
torch.save(ckpt, best)
del ckpt
# end epoch ----------------------------------------------------------------------------------------------------
# end training
if rank in [-1, 0]:
# Strip optimizers
final = best if best.exists() else last # final model
for f in [last, best]:
if f.exists():
strip_optimizer(f) # strip optimizers
if opt.bucket:
os.system(f'gsutil cp {final} gs://{opt.bucket}/weights') # upload
# Plots
if plots:
plot_results(save_dir=save_dir) # save as results.png
if wandb:
files = ['results.png', 'precision_recall_curve.png', 'confusion_matrix.png']
wandb.log({"Results": [wandb.Image(str(save_dir / f), caption=f) for f in files
if (save_dir / f).exists()]})
if opt.log_artifacts:
wandb.log_artifact(artifact_or_path=str(final), type='model', name=save_dir.stem)
# Test best.pt
logger.info('%g epochs completed in %.3f hours.\n' % (epoch - start_epoch + 1, (time.time() - t0) / 3600))
if opt.data.endswith('coco.yaml') and nc == 80: # if COCO
for conf, iou, save_json in ([0.25, 0.45, False], [0.001, 0.65, True]): # speed, mAP tests
results, _, _ = test.test(opt.data,
batch_size=total_batch_size,
imgsz=imgsz_test,
conf_thres=conf,
iou_thres=iou,
model=attempt_load(final, device).half(),
single_cls=opt.single_cls,
dataloader=testloader,
save_dir=save_dir,
save_json=save_json,
plots=False)
else:
dist.destroy_process_group()
wandb.run.finish() if wandb and wandb.run else None
torch.cuda.empty_cache()
return results
def geo_lng(dataloader, args):
mappings = pickle.load(open('util_files/country_lang_mappings.pkl', 'rb'))
iso3_to_lang = mappings['iso3_to_lang']
# Country to iso3 mappings that are missing
missing = {
'South+Korea': 'KOR',
'North+Korea': 'PRK',
'Laos': 'LAO',
'Caribbean+Netherlands': 'BES',
'St.+Lucia': 'LCA',
'East+Timor': 'TLS',
'Democratic+Republic+of+Congo': 'COD',
'Swaziland': 'SWZ',
'Cape+Verde': 'CPV',
'C%C3%B4te+d%C2%B4Ivoire': 'CIV',
'Ivory+Coast': 'CIV',
'Channel+Islands': 'GBR'
}
use_cuda = torch.cuda.is_available()
device = torch.device("cuda" if use_cuda else "cpu")
model = models.alexnet(pretrained=True).to(device)
new_classifier = nn.Sequential(*list(model.classifier.children())[:-1])
model.classifier = new_classifier
with_country = dataloader.dataset.with_country
country_with_langs = {}
country_with_imgs = {
} # for each country, first list is tourist second is local
lang_counts = {}
detecter = fasttext.load_model('util_files/lid.176.bin')
lang_dict = {}
normalize = transforms.Normalize(mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225])
for i, (data, target) in enumerate(tqdm(dataloader)):
if data is None:
continue
this_tags = [
tag['label'] for tag in target[0] if len(tag['label']) >= 3
]
if len(this_tags) > 0:
srcz = []
conf = []
for tag in this_tags:
classify = detecter.predict(tag)
srcz.append(classify[0][0][9:])
conf.append(classify[1][0])
# Pick out the most common language
commons = Counter(srcz).most_common()
the_src = commons[0][0]
# If the most common language is English, look at the second most common language
# since people oftentimes use English even when it's not their native language
if the_src == 'en' and len(commons) > 1:
the_src_maybe = commons[1][0]
words = [
i for i in range(len(srcz)) if srcz[i] == the_src_maybe
]
# If this second most common language has been classified with more than .5
# probability, then choose this language for the image
for word in words:
if conf[word] > .5:
the_src = the_src_maybe
if the_src in lang_counts.keys():
lang_counts[the_src] += 1
else:
lang_counts[the_src] = 1
country = target[2][0]
iso3 = None
local = None
try:
iso3 = pycountry.countries.search_fuzzy(
country.replace('+', ' '))[0].alpha_3
except LookupError:
iso3 = missing[country]
try:
country_info = CountryInfo(country.replace('+', ' ')).info()
except KeyError:
country_info = {}
country_name = country.split('+')
if 'name' in country_info.keys():
country_name += country_info['name']
if 'nativeName' in country_info.keys():
country_name += country_info['nativeName']
# When comparing images to distinguish between tourist and local, we further look into the content of the tags,
# allowing some images to be categorized as 'unknown' if we are not that sure if it's tourist or local
# Local: in a local language, country's name isn't a tag, and 'travel' isn't a tag
# Tourist: in a non-local language, or 'travel' is a tag
try:
if the_src in iso3_to_lang[iso3] and len(
set(country_name)
& set(this_tags)) == 0 and 'travel' not in this_tags:
local = 1
elif the_src not in iso3_to_lang[iso3] or 'travel' in this_tags:
local = 0
except KeyError:
print("This iso3 can't be found in iso3_to_lang: {}".format(
iso3))
if country not in country_with_langs.keys():
country_with_langs[country] = []
country_with_imgs[country] = [[], []]
country_with_langs[country].append(the_src)
if local is not None:
if len(country_with_imgs[country][local]) < 500:
data = normalize(data).to(device)
big_data = F.interpolate(data.unsqueeze(0),
size=224,
mode='bilinear').to(device)
this_features = model.forward(big_data)
country_with_imgs[country][local].append(
(this_features.data.cpu().numpy(), target[3]))
info = {}
info['lang_counts'] = lang_counts
info['country_with_langs'] = country_with_langs
info['country_with_imgs'] = country_with_imgs
pickle.dump(info, open("results/{}/geo_lng.pkl".format(args.folder), "wb"))
def geo_tag_region(dataloader, args):
# map from a region name to a list whose value at index i represents count of category
# i
region_tags = {}
tag_to_region_features = {}
categories = dataloader.dataset.categories
if not os.path.exists("results/{}/geo_ctr.pkl".format(args.folder)):
print('running geo_ctr_region() first to get necessary info...')
geo_ctr_region(dataloader, args)
counts = pickle.load(
open("results/{}/geo_ctr.pkl".format(args.folder), "rb"))
id_to_region = counts_gps['id_to_region']
# get name of regions
unique_regions = list(set(id_to_region.values()))
# Extracts features from model pretrained on ImageNet
use_cuda = torch.cuda.is_available()
device = torch.device("cuda" if use_cuda else "cpu")
model = models.alexnet(pretrained=True).to(device)
new_classifier = nn.Sequential(*list(model.classifier.children())[:-1])
model.classifier = new_classifier
normalize = transforms.Normalize(mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225])
region_features = {}
for region in unique_regions:
region_features[region] = []
for cat in range(len(categories)):
tag_to_region_features[cat] = copy.deepcopy(region_features)
for i, (data, target) in enumerate(tqdm(dataloader)):
if data is None:
continue
region_name = id_to_region[target[3]]
anns = target[0]
filepath = target[3]
this_categories = list(
set([categories.index(ann['label']) for ann in anns]))
if region_name not in region_tags.keys():
region_tags[region_name] = np.zeros(len(categories))
this_features = None
for cat in this_categories:
if len(tag_to_region_features[cat][region_name]) < 500:
data = normalize(data).to(device)
big_data = F.interpolate(data.unsqueeze(0),
size=224,
mode='bilinear').to(device)
this_features = model.forward(big_data)
break
for cat in this_categories:
if this_features is not None and len(
tag_to_region_features[cat][region_name]) < 500:
tag_to_region_features[cat][region_name].append(
(this_features.data.cpu().numpy(), filepath))
for ann in anns:
region_tags[region_name][categories.index(ann['label'])] += 1
info_stats = {}
info_stats['region_tags'] = region_tags
info_stats['tag_to_region_features'] = tag_to_region_features
pickle.dump(info_stats,
open("results/{}/geo_tag.pkl".format(args.folder), "wb"))
def get_bboxes_single(self,
cls_scores,
bbox_preds,
centernesses,
cof_preds,
feat_mask,
mlvl_points,
img_shape,
ori_shape,
scale_factor,
cfg,
rescale=False):
assert len(cls_scores) == len(bbox_preds) == len(mlvl_points)
mlvl_bboxes = []
mlvl_scores = []
mlvl_centerness = []
mlvl_cofs = []
for cls_score, bbox_pred, cof_pred, centerness, points in zip(
cls_scores, bbox_preds, cof_preds, centernesses, mlvl_points):
assert cls_score.size()[-2:] == bbox_pred.size()[-2:]
scores = cls_score.permute(1, 2, 0).reshape(
-1, self.cls_out_channels).sigmoid()
centerness = centerness.permute(1, 2, 0).reshape(-1).sigmoid()
bbox_pred = bbox_pred.permute(1, 2, 0).reshape(-1, 4)
cof_pred = cof_pred.permute(1, 2, 0).reshape(-1, 32 * 4)
nms_pre = cfg.get('nms_pre', -1)
if nms_pre > 0 and scores.shape[0] > nms_pre:
max_scores, _ = (scores * centerness[:, None]).max(dim=1)
_, topk_inds = max_scores.topk(nms_pre)
points = points[topk_inds, :]
bbox_pred = bbox_pred[topk_inds, :]
cof_pred = cof_pred[topk_inds, :]
scores = scores[topk_inds, :]
centerness = centerness[topk_inds]
bboxes = distance2bbox(points, bbox_pred, max_shape=img_shape)
mlvl_cofs.append(cof_pred)
mlvl_bboxes.append(bboxes)
mlvl_scores.append(scores)
mlvl_centerness.append(centerness)
mlvl_bboxes = torch.cat(mlvl_bboxes)
mlvl_cofs = torch.cat(mlvl_cofs)
if rescale:
mlvl_bboxes /= mlvl_bboxes.new_tensor(scale_factor)
mlvl_scores = torch.cat(mlvl_scores)
padding = mlvl_scores.new_zeros(mlvl_scores.shape[0], 1)
mlvl_scores = torch.cat([padding, mlvl_scores], dim=1)
mlvl_centerness = torch.cat(mlvl_centerness)
mlvl_scores = mlvl_scores * mlvl_centerness.view(-1, 1)
det_bboxes, det_labels, det_cofs = self.fast_nms(
mlvl_bboxes,
mlvl_scores[:, 1:].transpose(1, 0).contiguous(),
mlvl_cofs,
cfg,
iou_threshold=0.5)
masks = []
if det_bboxes.shape[0] > 0:
scale = 2
#####spp########################
img_mask1 = feat_mask.permute(1, 2, 0)
pos_masks00 = torch.sigmoid(img_mask1 @ det_cofs[:, 0:32].t())
pos_masks01 = torch.sigmoid(img_mask1 @ det_cofs[:, 32:64].t())
pos_masks10 = torch.sigmoid(img_mask1 @ det_cofs[:, 64:96].t())
pos_masks11 = torch.sigmoid(img_mask1 @ det_cofs[:, 96:128].t())
if rescale:
pos_masks = torch.stack(
[pos_masks00, pos_masks01, pos_masks10, pos_masks11],
dim=0)
pos_masks = self.crop_cuda(
pos_masks, det_bboxes[:, :4] *
det_bboxes.new_tensor(scale_factor) / scale)
# pos_masks = crop_split(pos_masks00, pos_masks01, pos_masks10, pos_masks11, det_bboxes * det_bboxes.new_tensor(scale_factor) / scale)
else:
pos_masks = torch.stack(
[pos_masks00, pos_masks01, pos_masks10, pos_masks11],
dim=0)
pos_masks = self.crop_cuda(pos_masks,
det_bboxes[:, :4] / scale)
# pos_masks = crop_split(pos_masks00, pos_masks01, pos_masks10, pos_masks11, det_bboxes / scale)
pos_masks = pos_masks.permute(2, 0, 1)
if rescale:
masks = F.interpolate(pos_masks.unsqueeze(0),
scale_factor=scale / scale_factor,
mode='bilinear',
align_corners=False).squeeze(0)
else:
masks = F.interpolate(pos_masks.unsqueeze(0),
scale_factor=scale,
mode='bilinear',
align_corners=False).squeeze(0)
masks.gt_(0.5)
return det_bboxes, det_labels, masks
def __upsample_cat(self, p2, p3, p4, p5):
h, w = p2.size()[2:]
p3 = F.interpolate(p3, size=(h, w), mode='bilinear', align_corners=False)
p4 = F.interpolate(p4, size=(h, w), mode='bilinear', align_corners=False)
p5 = F.interpolate(p5, size=(h, w), mode='bilinear', align_corners=False)
return torch.cat([p2, p3, p4, p5], dim=1)
def resize(
img: Tensor,
size: List[int],
interpolation: str = "bilinear",
max_size: Optional[int] = None,
antialias: Optional[bool] = None,
) -> Tensor:
_assert_image_tensor(img)
if not isinstance(size, (int, tuple, list)):
raise TypeError("Got inappropriate size arg")
if not isinstance(interpolation, str):
raise TypeError("Got inappropriate interpolation arg")
if interpolation not in ["nearest", "bilinear", "bicubic"]:
raise ValueError("This interpolation mode is unsupported with Tensor input")
if isinstance(size, tuple):
size = list(size)
if isinstance(size, list):
if len(size) not in [1, 2]:
raise ValueError(
f"Size must be an int or a 1 or 2 element tuple/list, not a {len(size)} element tuple/list"
)
if max_size is not None and len(size) != 1:
raise ValueError(
"max_size should only be passed if size specifies the length of the smaller edge, "
"i.e. size should be an int or a sequence of length 1 in torchscript mode."
)
if antialias is None:
antialias = False
if antialias and interpolation not in ["bilinear", "bicubic"]:
raise ValueError("Antialias option is supported for bilinear and bicubic interpolation modes only")
_, h, w = get_dimensions(img)
if isinstance(size, int) or len(size) == 1: # specified size only for the smallest edge
short, long = (w, h) if w <= h else (h, w)
requested_new_short = size if isinstance(size, int) else size[0]
new_short, new_long = requested_new_short, int(requested_new_short * long / short)
if max_size is not None:
if max_size <= requested_new_short:
raise ValueError(
f"max_size = {max_size} must be strictly greater than the requested "
f"size for the smaller edge size = {size}"
)
if new_long > max_size:
new_short, new_long = int(max_size * new_short / new_long), max_size
new_w, new_h = (new_short, new_long) if w <= h else (new_long, new_short)
if (w, h) == (new_w, new_h):
return img
else: # specified both h and w
new_w, new_h = size[1], size[0]
img, need_cast, need_squeeze, out_dtype = _cast_squeeze_in(img, [torch.float32, torch.float64])
# Define align_corners to avoid warnings
align_corners = False if interpolation in ["bilinear", "bicubic"] else None
img = interpolate(img, size=[new_h, new_w], mode=interpolation, align_corners=align_corners, antialias=antialias)
if interpolation == "bicubic" and out_dtype == torch.uint8:
img = img.clamp(min=0, max=255)
img = _cast_squeeze_out(img, need_cast=need_cast, need_squeeze=need_squeeze, out_dtype=out_dtype)
return img
def forward(self, x):
return F.interpolate(x, scale_factor=self.scale_factor, mode=self.mode)
test_dir = '/workspace/test_dir'
filenames = [
join(test_dir, x) for x in listdir(test_dir) if is_image_file(x)
]
filenames.sort()
output_dir = join(test_dir, "outputs")
if not os.path.exists(output_dir):
os.mkdir(output_dir)
bg_scale = 2
for fn in filenames:
img = Image.open(fn).convert("RGB")
input_data = T.ToTensor()(img).unsqueeze(0).cuda()
input_data = opt.bg_valid_blur(input_data)
bg_upblur = F.interpolate(input_data,
scale_factor=bg_scale,
mode='bilinear',
align_corners=False)
bg_upblur = opt.bg_base_blur(bg_upblur)
b, c, h, w = input_data.shape
ph0, ph1, pw0, pw1 = [0] * 4
min_sz = 256
if h < min_sz or w < min_sz:
ph0 = 0 if h > min_sz else (min_sz - h) // 2
pw0 = 0 if w > min_sz else (min_sz - w) // 2
ph1 = ph0
pw1 = pw0
if h + ph0 + ph1 < min_sz:
ph1 += min_sz - h - ph0 - ph1
def _upsample(x, size):
return F.interpolate(x, size=size, mode='bilinear', align_corners=True)
)
print(len(dataloader.dataset))
data = iter(dataloader)
for i in range(len(dataloader.dataset)):
"""Saves a generated sample from the validation set"""
img = next(data)
# print(img.unsqueeze(0).size())
X1 = img.repeat(opt.style_dim, 1, 1, 1)
X1 = Variable(X1.type(Tensor))
# Get random style codes
s_code = np.random.uniform(-1, 1, (opt.style_dim, opt.style_dim))
s_code = Variable(Tensor(s_code))
# Generate samples
c_code_1, _ = Enc1(X1)
X12 = Dec2(c_code_1, s_code)
# Concatenate samples horisontally
name = dataloader.dataset.files[i].split("/")[-1]
for i, sample in enumerate(X12):
tmp_name = name.split(".")[0] + "_" + str(i) + "." + name.split(
".")[-1]
sample = F.interpolate(sample.unsqueeze(0),
size=(480, 640),
mode='bicubic')
# sample = transform.resize(sample.unsqueeze(0), (480, 640))
save_image(sample,
opt.output_location + "/" + tmp_name,
normalize=True)
def _calculate_localization_map(self, inputs, labels=None):
"""
Calculate localization map for all inputs with Grad-CAM.
Args:
inputs (list of tensor(s)): the input clips.
labels (Optional[tensor]): labels of the current input clips.
Returns:
localization_maps (list of ndarray(s)): the localization map for
each corresponding input.
preds (tensor): shape (n_instances, n_class). Model predictions for `inputs`.
"""
assert len(inputs) == len(
self.target_layers
), "Must register the same number of target layers as the number of input pathways."
input_clone = [inp.clone() for inp in inputs]
preds = self.model(input_clone)
if labels is None:
score = torch.max(preds, dim=-1)[0]
else:
if labels.ndim == 1:
labels = labels.unsqueeze(-1)
score = torch.gather(preds, dim=1, index=labels)
self.model.zero_grad()
score = torch.sum(score)
score.backward()
localization_maps = []
for i, inp in enumerate(inputs):
_, _, T, H, W = inp.size()
gradients = self.gradients[self.target_layers[i]]
activations = self.activations[self.target_layers[i]]
B, C, Tg, _, _ = gradients.size()
weights = torch.mean(gradients.view(B, C, Tg, -1), dim=3)
weights = weights.view(B, C, Tg, 1, 1)
localization_map = torch.sum(
weights * activations, dim=1, keepdim=True
)
localization_map = F.relu(localization_map)
localization_map = F.interpolate(
localization_map,
size=(T, H, W),
mode="trilinear",
align_corners=False,
)
localization_map_min, localization_map_max = (
torch.min(localization_map.view(B, -1), dim=-1, keepdim=True)[
0
],
torch.max(localization_map.view(B, -1), dim=-1, keepdim=True)[
0
],
)
localization_map_min = torch.reshape(
localization_map_min, shape=(B, 1, 1, 1, 1)
)
localization_map_max = torch.reshape(
localization_map_max, shape=(B, 1, 1, 1, 1)
)
# Normalize the localization map.
localization_map = (localization_map - localization_map_min) / (
localization_map_max - localization_map_min + 1e-6
)
localization_map = localization_map.data
localization_maps.append(localization_map)
return localization_maps, preds
def forward(self,
input,
label,
step=0,
alpha=-1,
content_input=None,
style_layer_begin=0,
style_layer_end=-1):
out_act = lambda x: x
if style_layer_end == -1: #content_input layer IDs go from 0 to (step). The local numbering is reversed so that, at 128x128 when step=5, id=0 <==> (step-5), id=1 <==> (step-4) etc.
style_layer_end = step + 1
style_layer_end = min(step + 1, style_layer_end)
if style_layer_begin == -1 or style_layer_begin >= style_layer_end:
return content_input
assert (not input is None)
# Label is reserved for future use. Make None if not in use. #label = self.label_embed(label)
if not label is None:
input = torch.cat([input, label], 1)
batchN = input.size()[0]
if args.stylefc > 0:
input = self.z_preprocess[0](input)
for anb in self.adanorm_blocks:
anb.update(input)
# For 3 levels of coarseness, for the 2 resnet-block layers, in both the generator and generator_running. Since the layers are just added to the global list without specific indices, the resulting index numbers are ad hoc but atm they are deterministically like here:
def layers_for_block_depth(d, holder):
# Generator layers start from 0 and running-Generatro from 17, or vice versa. For both, do the same styling.
network_offset = int(len(holder.adanorm_blocks) / 2) #17
return [d * 2,
d * 2 + 1] #, d*2+network_offset, d*2+network_offset+1]
# The first conv call will start from a constant content_input defined as a class-level var in AdaNorm
if content_input is None:
out = torch.ones(512, 4, 4).to(device=input.device).repeat(
batchN, 1, 1, 1)
else:
out = content_input
block_offset = 0
for i in range(style_layer_begin, style_layer_end):
if i > 0 and not i in Generator.supportBlockPoints:
if args.upsampling != 'bilinear':
upsample = F.upsample(out, scale_factor=2)
else:
upsample = F.interpolate(out,
align_corners=False,
scale_factor=2,
mode='bilinear')
else:
upsample = out
out = upsample
if i == 0 or not self.use_layer_noise:
out = self.progression[i](out)
else:
out = self.progression[i].conv[0][0](out)
out = self.progression[i].conv[0][1](out)
out = self.noise[i][0](out)
out = self.progression[i].conv[0][2](out) #act
if args.upsampling != 'bilinear':
out = self.progression[i].conv[0][3](out) #Blur
out = self.progression[i].conv[1](out)
out = self.noise[i][1](out)
out = self.progression[i].conv[2](out) #act
out = self.progression[i].conv[3](out)
if style_layer_end == step + 1: # The final layer is ALWAYS either to_rgb layer, or a mixture of 2 to-rgb_layers!
out = out_act(self.to_rgb[step](out))
if style_layer_end > 1 and 0 <= alpha < 1:
skip_rgb = out_act(self.to_rgb[step - 1](upsample))
if args.gnn:
channelwise_std = skip_rgb.std((0, 2, 3), keepdim=True)
channelwise_mean = skip_rgb.mean((0, 2, 3), keepdim=True)
out_std = out.std(dim=(0, 2, 3), keepdim=True)
out_mean = out.mean(dim=(0, 2, 3), keepdim=True)
skip_rgb = (skip_rgb - channelwise_mean) * (
out_std / channelwise_std) + out_mean
out = (1 - alpha) * skip_rgb + alpha * out
return out
def resize(image, size):
image = F.interpolate(image.unsqueeze(0), size=size,
mode="nearest").squeeze(0)
return image
def forward(self, x):
b, t, c, h, w = x.size()
if self.hr_in:
assert h % (self.upscale**2) == 0 and w % (self.upscale**2) == 0, (
'The height and width must be multiple of {}.'.format(
self.upscale**2))
else:
assert h % self.upscale == 0 and w % self.upscale == 0, (
'The height and width must be multiple of {}.'.format(
self.upscale))
x_center = x[:, self.center_frame_idx, :, :, :].contiguous()
# extract features for each frame
# L1
if self.with_predeblur:
feat_l1 = self.conv_1x1(self.predeblur(x.view(-1, c, h, w)))
if self.hr_in:
h, w = h // self.upscale, w // self.upscale
else:
feat_l1 = self.lrelu(self.conv_first(x.view(-1, c, h, w)))
feat_l1 = self.feature_extraction(feat_l1)
# L2
feat_l2 = self.lrelu(self.conv_l2_1(feat_l1))
feat_l2 = self.lrelu(self.conv_l2_2(feat_l2))
# L3
feat_l3 = self.lrelu(self.conv_l3_1(feat_l2))
feat_l3 = self.lrelu(self.conv_l3_2(feat_l3))
feat_l1 = feat_l1.view(b, t, -1, h, w)
feat_l2 = feat_l2.view(b, t, -1, h // 2, w // 2)
feat_l3 = feat_l3.view(b, t, -1, h // 4, w // 4)
# PCD alignment
ref_feat_l = [ # reference feature list
feat_l1[:, self.center_frame_idx, :, :, :].clone(),
feat_l2[:, self.center_frame_idx, :, :, :].clone(),
feat_l3[:, self.center_frame_idx, :, :, :].clone()
]
aligned_feat = []
for i in range(t):
nbr_feat_l = [ # neighboring feature list
feat_l1[:, i, :, :, :].clone(), feat_l2[:, i, :, :, :].clone(),
feat_l3[:, i, :, :, :].clone()
]
aligned_feat.append(self.pcd_align(nbr_feat_l, ref_feat_l))
aligned_feat = torch.stack(aligned_feat, dim=1) # (b, t, c, h, w)
if not self.with_tsa:
aligned_feat = aligned_feat.view(b, -1, h, w)
feat = self.fusion(aligned_feat)
out = self.reconstruction(feat)
if self.add_rrdb:
out = self.RRDB(out)
for i in range(self.n_upscale):
upconv = getattr(self, f'upconv{i+1}')
out = self.lrelu(self.pixel_shuffle(upconv(out)))
out = self.lrelu(self.conv_hr(out))
out = self.conv_last(out)
if self.hr_in:
base = x_center
else:
base = F.interpolate(x_center,
scale_factor=self.upscale,
mode='bilinear',
align_corners=False)
out += base
return out
def forward(self, conv_out, output_switch=None, seg_size=None):
output_dict = {k: None for k in output_switch.keys()}
conv5 = conv_out[-1]
input_size = conv5.size()
ppm_out = [conv5]
roi = [] # fake rois, just used for pooling
for i in range(input_size[0]): # batch size
roi.append(torch.Tensor([i, 0, 0, input_size[3], input_size[2]]).view(1, -1)) # b, x0, y0, x1, y1
roi = torch.cat(roi, dim=0).type_as(conv5)
ppm_out = [conv5]
for pool_scale, pool_conv in zip(self.ppm_pooling, self.ppm_conv):
ppm_out.append(pool_conv(F.interpolate(
pool_scale(conv5, roi.detach()),
(input_size[2], input_size[3]),
mode='bilinear', align_corners=False)))
ppm_out = torch.cat(ppm_out, 1)
f = self.ppm_last_conv(ppm_out)
if output_switch['scene']: # scene
output_dict['scene'] = self.scene_head(f)
if output_switch['object'] or output_switch['part'] or output_switch['material']:
fpn_feature_list = [f]
for i in reversed(range(len(conv_out) - 1)):
conv_x = conv_out[i]
conv_x = self.fpn_in[i](conv_x) # lateral branch
f = F.interpolate(
f, size=conv_x.size()[2:], mode='bilinear', align_corners=False) # top-down branch
f = conv_x + f
fpn_feature_list.append(self.fpn_out[i](f))
fpn_feature_list.reverse() # [P2 - P5]
# material
if output_switch['material']:
output_dict['material'] = self.material_head(fpn_feature_list[0])
if output_switch['object'] or output_switch['part']:
output_size = fpn_feature_list[0].size()[2:]
fusion_list = [fpn_feature_list[0]]
for i in range(1, len(fpn_feature_list)):
fusion_list.append(F.interpolate(
fpn_feature_list[i],
output_size,
mode='bilinear', align_corners=False))
fusion_out = torch.cat(fusion_list, 1)
x = self.conv_fusion(fusion_out)
if output_switch['object']: # object
output_dict['object'] = self.object_head(x)
if output_switch['part']:
output_dict['part'] = self.part_head(x)
if self.use_softmax: # is True during inference
# inference scene
x = output_dict['scene']
x = x.squeeze(3).squeeze(2)
x = F.softmax(x, dim=1)
output_dict['scene'] = x
# inference object, material
for k in ['object', 'material']:
x = output_dict[k]
x = F.interpolate(x, size=seg_size, mode='bilinear', align_corners=False)
x = F.softmax(x, dim=1)
output_dict[k] = x
# inference part
x = output_dict['part']
x = F.interpolate(x, size=seg_size, mode='bilinear', align_corners=False)
part_pred_list, head = [], 0
for idx_part, object_label in enumerate(broden_dataset.object_with_part):
n_part = len(broden_dataset.object_part[object_label])
_x = F.interpolate(x[:, head: head + n_part], size=seg_size, mode='bilinear', align_corners=False)
_x = F.softmax(_x, dim=1)
part_pred_list.append(_x)
head += n_part
output_dict['part'] = part_pred_list
else: # Training
# object, scene, material
for k in ['object', 'scene', 'material']:
if output_dict[k] is None:
continue
x = output_dict[k]
x = F.log_softmax(x, dim=1)
if k == "scene": # for scene
x = x.squeeze(3).squeeze(2)
output_dict[k] = x
if output_dict['part'] is not None:
part_pred_list, head = [], 0
for idx_part, object_label in enumerate(broden_dataset.object_with_part):
n_part = len(broden_dataset.object_part[object_label])
x = output_dict['part'][:, head: head + n_part]
x = F.log_softmax(x, dim=1)
part_pred_list.append(x)
head += n_part
output_dict['part'] = part_pred_list
return output_dict
def geo_tag(dataloader, args):
# redirect to geo_tag_gps if dataset is of gps form:
if (dataloader.dataset.geography_info_type == "GPS_LABEL"):
print("redirecting to geo_tag_gps()...")
return geo_tag_gps(dataloader, args)
elif (dataloader.dataset.geography_info_type == "STRING_FORMATTED_LABEL"
and dataloader.dataset.geography_label_string_type
== "REGION_LABEL"):
print("redirecting to geo_tag_region()...")
return geo_tag_region(dataloader, args)
country_tags = {}
tag_to_subregion_features = {}
categories = dataloader.dataset.categories
iso3_to_subregion = pickle.load(
open('util_files/iso3_to_subregion_mappings.pkl', 'rb'))
unique_subregions = set(list(iso3_to_subregion.values()))
# Extracts features from model pretrained on ImageNet
use_cuda = torch.cuda.is_available()
device = torch.device("cuda" if use_cuda else "cpu")
model = models.alexnet(pretrained=True).to(device)
new_classifier = nn.Sequential(*list(model.classifier.children())[:-1])
model.classifier = new_classifier
normalize = transforms.Normalize(mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225])
subregion_features = {}
for subregion in unique_subregions:
subregion_features[subregion] = []
for cat in range(len(categories)):
tag_to_subregion_features[cat] = copy.deepcopy(subregion_features)
for i, (data, target) in enumerate(tqdm(dataloader)):
if data is None:
continue
country = target[2][0]
anns = target[0]
filepath = target[3]
this_categories = list(
set([categories.index(ann['label']) for ann in anns]))
subregion = iso3_to_subregion[country_to_iso3(country)]
if country not in country_tags.keys():
country_tags[country] = np.zeros(len(categories))
this_features = None
for cat in this_categories:
if len(tag_to_subregion_features[cat][subregion]) < 500:
data = normalize(data).to(device)
big_data = F.interpolate(data.unsqueeze(0),
size=224,
mode='bilinear').to(device)
this_features = model.forward(big_data)
break
for cat in this_categories:
country_tags[country][cat] += 1
if this_features is not None and len(
tag_to_subregion_features[cat][subregion]) < 500:
tag_to_subregion_features[cat][subregion].append(
(this_features.data.cpu().numpy(), filepath))
info_stats = {}
info_stats['country_tags'] = country_tags
info_stats['tag_to_subregion_features'] = tag_to_subregion_features
pickle.dump(info_stats,
open("results/{}/geo_tag.pkl".format(args.folder), "wb"))
def forward(self, x):
x = self.block(x)
if self.upsample:
x = F.interpolate(x, scale_factor=2, mode='bilinear', align_corners=True)
return x
def downsample(masks):
masks = F.interpolate(masks,scale_factor= 1/2, mode="bilinear",align_corners=True,recompute_scale_factor=True)
m = masks >= 0 #.5
masks[m] = 1
masks[~m] = 0
return masks
def plot_heatmap(image, gt,label, model, layer):
"""
function to plot the heat map on original transformed input image
Args:
x: the 1x3x512x512 pytorch tensor file that represents the NIH CXR should be consistent with cfg.CROP_SIZE
label:user-supplied label you wish to get class activation map for; must be in FINDINGS list
model: densenet121 trained on NIH CXR data
layer: which layer's heat map to extract
Returns:
cam_torch: 224x224 torch tensor containing activation map
"""
label_index = -1
for i in range(14):
if CLASS_NAMES[i] == label:
label_index = i
break
assert label_index != -1
res, fea = model(image)
choosen = fea[layer]
choosen = torch.sum(choosen, dim=1).unsqueeze(0)
size = choosen.size()[2:]
# bilinear pooling to make it becomes original size
choosen = F.interpolate(choosen, list(size), mode="bilinear")
raw_cam = choosen.detach()
# create predictions for label of interest and all labels
list_res = res[1][0].data.tolist()
predx = ['%.3f' % elem for elem in list_res]
fig, (showcxr, heatmap) = plt.subplots(ncols=2, figsize=(14, 5))
hmap = sns.heatmap(raw_cam.squeeze(),
cmap='viridis',
alpha=0.3, # whole heatmap is translucent
zorder=2, square=True, vmin=-5, vmax=5
)
cxr = image.squeeze(0).permute(1,2,0).cpu().numpy()
mean = np.array([0.485, 0.456, 0.406])
std = np.array([0.229, 0.224, 0.225])
# cxr = cxr * std + mean
cxr = np.clip(cxr, 0, 1)
LABEL = label
# print cxr.size()
hmap.imshow(cxr,
aspect=hmap.get_aspect(),
extent=hmap.get_xlim() + hmap.get_ylim(),
zorder=1) # put the map under the heatmap
hmap.axis('off')
hmap.set_title("P(" + LABEL + ")=" + str(predx[label_index]))
showcxr.imshow(cxr)
showcxr.axis('off')
showcxr.set_title("Heat Map")
plt.show()
preds_concat = pd.concat([pd.Series(CLASS_NAMES), pd.Series(predx), pd.Series(gt.numpy().astype(bool)[0])], axis=1)
preds = pd.DataFrame(data=preds_concat)
preds.columns = ["Finding", "Predicted Probability", "Ground Truth"]
preds.set_index("Finding", inplace=True)
preds.sort_values(by='Predicted Probability', inplace=True, ascending=False)
return preds
def __upsample_add(self, x, y):
return F.interpolate(x, size=y.size()[2:], mode='bilinear', align_corners=False) + y
def lincomb_mask_loss(self,
pos,
idx_t,
loc_data,
mask_data,
priors,
proto_data,
masks,
gt_box_t,
inst_data,
interpolation_mode='bilinear'):
mask_h = proto_data.size(1)
mask_w = proto_data.size(2)
process_gt_bboxes = cfg.mask_proto_normalize_emulate_roi_pooling or cfg.mask_proto_crop
if cfg.mask_proto_remove_empty_masks:
# Make sure to store a copy of this because we edit it to get rid of all-zero masks
pos = pos.clone()
loss_m = 0
loss_d = 0 # Coefficient diversity loss
for idx in range(mask_data.size(0)):
with torch.no_grad():
downsampled_masks = F.interpolate(
masks[idx].unsqueeze(0), (mask_h, mask_w),
mode=interpolation_mode,
align_corners=False).squeeze(0)
downsampled_masks = downsampled_masks.permute(1, 2,
0).contiguous()
if cfg.mask_proto_binarize_downsampled_gt:
downsampled_masks = downsampled_masks.gt(0.5).float()
if cfg.mask_proto_remove_empty_masks:
# Get rid of gt masks that are so small they get downsampled away
very_small_masks = (downsampled_masks.sum(dim=(0, 1)) <=
0.0001)
for i in range(very_small_masks.size(0)):
if very_small_masks[i]:
pos[idx, idx_t[idx] == i] = 0
if cfg.mask_proto_reweight_mask_loss:
# Ensure that the gt is binary
if not cfg.mask_proto_binarize_downsampled_gt:
bin_gt = downsampled_masks.gt(0.5).float()
else:
bin_gt = downsampled_masks
gt_foreground_norm = bin_gt / (
torch.sum(bin_gt, dim=(0, 1), keepdim=True) + 0.0001)
gt_background_norm = (1 - bin_gt) / (torch.sum(
1 - bin_gt, dim=(0, 1), keepdim=True) + 0.0001)
mask_reweighting = gt_foreground_norm * cfg.mask_proto_reweight_coeff + gt_background_norm
mask_reweighting *= mask_h * mask_w
cur_pos = pos[idx]
pos_idx_t = idx_t[idx, cur_pos]
if process_gt_bboxes:
# Note: this is in point-form
pos_gt_box_t = gt_box_t[idx, cur_pos]
if pos_idx_t.size(0) == 0:
continue
proto_masks = proto_data[idx]
proto_coef = mask_data[idx, cur_pos, :]
if cfg.mask_proto_coeff_diversity_loss:
if inst_data is not None:
div_coeffs = inst_data[idx, cur_pos, :]
else:
div_coeffs = proto_coef
loss_d += self.coeff_diversity_loss(div_coeffs, pos_idx_t)
# If we have over the allowed number of masks, select a random sample
old_num_pos = proto_coef.size(0)
if old_num_pos > cfg.masks_to_train:
perm = torch.randperm(proto_coef.size(0))
select = perm[:cfg.masks_to_train]
proto_coef = proto_coef[select, :]
pos_idx_t = pos_idx_t[select]
if process_gt_bboxes:
pos_gt_box_t = pos_gt_box_t[select, :]
num_pos = proto_coef.size(0)
mask_t = downsampled_masks[:, :, pos_idx_t]
# Size: [mask_h, mask_w, num_pos]
pred_masks = proto_masks @ proto_coef.t()
pred_masks = cfg.mask_proto_mask_activation(pred_masks)
if cfg.mask_proto_double_loss:
if cfg.mask_proto_mask_activation == activation_func.sigmoid:
pre_loss = F.binary_cross_entropy(torch.clamp(
pred_masks, 0, 1),
mask_t,
reduction='sum')
else:
pre_loss = F.smooth_l1_loss(pred_masks,
mask_t,
reduction='sum')
loss_m += cfg.mask_proto_double_loss_alpha * pre_loss
if cfg.mask_proto_crop:
pred_masks = crop(pred_masks, pos_gt_box_t)
if cfg.mask_proto_mask_activation == activation_func.sigmoid:
pre_loss = F.binary_cross_entropy(torch.clamp(
pred_masks, 0, 1),
mask_t,
reduction='none')
else:
pre_loss = F.smooth_l1_loss(pred_masks,
mask_t,
reduction='none')
if cfg.mask_proto_normalize_mask_loss_by_sqrt_area:
gt_area = torch.sum(mask_t, dim=(0, 1), keepdim=True)
pre_loss = pre_loss / (torch.sqrt(gt_area) + 0.0001)
if cfg.mask_proto_reweight_mask_loss:
pre_loss = pre_loss * mask_reweighting[:, :, pos_idx_t]
if cfg.mask_proto_normalize_emulate_roi_pooling:
weight = mask_h * mask_w if cfg.mask_proto_crop else 1
pos_get_csize = center_size(pos_gt_box_t)
gt_box_width = pos_get_csize[:, 2] * mask_w
gt_box_height = pos_get_csize[:, 3] * mask_h
pre_loss = pre_loss.sum(
dim=(0, 1)) / gt_box_width / gt_box_height * weight
# If the number of masks were limited scale the loss accordingly
if old_num_pos > num_pos:
pre_loss *= old_num_pos / num_pos
loss_m += torch.sum(pre_loss)
losses = {'M': loss_m * cfg.mask_alpha / mask_h / mask_w}
if cfg.mask_proto_coeff_diversity_loss:
losses['D'] = loss_d
return losses
def upsample(x):
"""Upsample input tensor by a factor of 2
"""
return F.interpolate(x, scale_factor=2, mode="nearest")
def train(args, train_loader, disp_net, pose_exp_net, optimizer, epoch_size, logger, train_writer):
global n_iter, device
batch_time = AverageMeter()
data_time = AverageMeter()
losses = AverageMeter(precision=4)
w1, w2, w3 = args.photo_loss_weight, args.mask_loss_weight, args.smooth_loss_weight
# switch to train mode
disp_net.train()
pose_exp_net.train()
end = time.time()
logger.train_bar.update(0)
for i, (tgt_img, ref_imgs, intrinsics, intrinsics_inv) in enumerate(train_loader):
# measure data loading time
data_time.update(time.time() - end)
tgt_img = tgt_img.to(device)
ref_imgs = [img.to(device) for img in ref_imgs]
intrinsics = intrinsics.to(device)
intrinsics_inv = intrinsics_inv.to(device)
# compute output
disparities = disp_net(tgt_img)
depth = [1/disp for disp in disparities]
explainability_mask, pose = pose_exp_net(tgt_img, ref_imgs)
loss_1 = photometric_reconstruction_loss(tgt_img, ref_imgs,
intrinsics, intrinsics_inv,
depth, explainability_mask, pose,
args.rotation_mode, args.padding_mode)
if w2 > 0:
loss_2 = explainability_loss(explainability_mask)
else:
loss_2 = 0
loss_3 = smooth_loss(depth)
loss = w1*loss_1 + w2*loss_2 + w3*loss_3
if i > 0 and n_iter % args.print_freq == 0:
train_writer.add_scalar('photometric_error', loss_1.item(), n_iter)
if w2 > 0:
train_writer.add_scalar('explanability_loss', loss_2.item(), n_iter)
train_writer.add_scalar('disparity_smoothness_loss', loss_3.item(), n_iter)
train_writer.add_scalar('total_loss', loss.item(), n_iter)
if args.training_output_freq > 0 and n_iter % args.training_output_freq == 0:
train_writer.add_image('train Input', tensor2array(tgt_img[0]), n_iter)
for k, scaled_depth in enumerate(depth):
train_writer.add_image('train Dispnet Output Normalized {}'.format(k),
tensor2array(disparities[k][0], max_value=None, colormap='bone'),
n_iter)
train_writer.add_image('train Depth Output Normalized {}'.format(k),
tensor2array(1/disparities[k][0], max_value=None),
n_iter)
b, _, h, w = scaled_depth.size()
downscale = tgt_img.size(2)/h
tgt_img_scaled = F.interpolate(tgt_img, (h, w), mode='area')
ref_imgs_scaled = [F.interpolate(ref_img, (h, w), mode='area') for ref_img in ref_imgs]
intrinsics_scaled = torch.cat((intrinsics[:, 0:2]/downscale, intrinsics[:, 2:]), dim=1)
intrinsics_scaled_inv = torch.cat((intrinsics_inv[:, :, 0:2]*downscale, intrinsics_inv[:, :, 2:]), dim=2)
# log warped images along with explainability mask
for j,ref in enumerate(ref_imgs_scaled):
ref_warped = inverse_warp(ref, scaled_depth[:,0], pose[:,j],
intrinsics_scaled, intrinsics_scaled_inv,
rotation_mode=args.rotation_mode,
padding_mode=args.padding_mode)[0]
train_writer.add_image('train Warped Outputs {} {}'.format(k,j),
tensor2array(ref_warped),
n_iter)
train_writer.add_image('train Diff Outputs {} {}'.format(k,j),
tensor2array(0.5*(tgt_img_scaled[0] - ref_warped).abs()),
n_iter)
if explainability_mask[k] is not None:
train_writer.add_image('train Exp mask Outputs {} {}'.format(k,j),
tensor2array(explainability_mask[k][0,j], max_value=1, colormap='bone'),
n_iter)
# record loss and EPE
losses.update(loss.item(), args.batch_size)
# compute gradient and do Adam step
optimizer.zero_grad()
loss.backward()
optimizer.step()
# measure elapsed time
batch_time.update(time.time() - end)
end = time.time()
with open(args.save_path/args.log_full, 'a') as csvfile:
writer = csv.writer(csvfile, delimiter='\t')
writer.writerow([loss.item(), loss_1.item(), loss_2.item() if w2 > 0 else 0, loss_3.item()])
logger.train_bar.update(i+1)
if i % args.print_freq == 0:
logger.train_writer.write('Train: Time {} Data {} Loss {}'.format(batch_time, data_time, losses))
if i >= epoch_size - 1:
break
n_iter += 1
return losses.avg[0]
def split_feats(self, feats):
return (F.interpolate(feats['p2'], scale_factor=0.5, mode='bilinear'),
feats['p3'],
feats['p4'],
feats['p5'],
F.interpolate(feats['p6'], size=feats['p5'].shape[-2:], mode='bilinear'))
